German s. 10 cm K. 18 (10.5 calibre) Q.F. CartridgeGerman Primer, Percussion, Q.F. Cartridge, Vz. 33 of Czech Origin
HANDBOOK OF ENEMY AMMUNITION
PAMPHLET No. 9
GERMAN TELLERMINES, DEMOLITION CHARGES, FUZES AND GUN AMMUNITION OF CZECH ORIGIN, ITALIAN FUZE, PRIMER AND SHELL
GERMAN 3.7 CM CARTRIDGE, Q.F., A.P.C. OF CZECH ORIGIN
(Fig. 8)

The fixed Q.F. round is a Skoda production and is 14.85 inches long. The weight of the complete round is 3 lb. 2 oz. 12 dr. The cap of the shell is black but the body is unpain-ted and is stencilled in red. The stencilling inclu-des the letters "PL" to indicate the bursting charge of P.E.T.N./T.N.T., the Skoda symbol followed by the letter "D" to indi-cate the filler and place of fil-ling and a letter and numerals indicating the serial and number of the filled lot. The copper driving band has three cannelures. The brass case is 10.55 inches in length and has stamped in the base the designation "3,7 cm VZ 34". The stencilling, "P.P. Vz 36S", relating to the propellant is found in black on the base of the case.

The complete round consists of the following components:–
(a)

Armour piercing shell fitted with a penetrative cap and filled P.E.T.N./ T.N.T. 30/70.

(b) Skoda base fuze B.Z. 15.
(c) Brass case, 3.7 cm Vz. 34.
(d)

Propellant charge of double base composition in strip form with a decoppering agent.

(e) Medium percussion primer, Vz 33 s.v.
Shell

The steel body is machined from rolled bar and has a hardened head. The V.D. Hardness figure for the head averages about 800. The cavity for the bursting charge is of the small size characteristic of piercing shell and is closed at the base by the fuze with a copper washer. A copper driving band with three cannelures is fitted and the body, near the base, is streamlined.

The steel penetrative cap tapers towards its nose which is circular and rises slightly to form a point at its centre. The cap is machined from bar, hardnened throughout and is attached by a soldering process. The V.D. Hardened figure averages about 675.

The weight of the empty shell is 1.76 lb.

The bursting charge consists of 5 dr. of P.E.T.N./T.N.T., 30/70 in the form of two com-pressed pellets in a cardboard carton. The upper pellet is solid, the lower being in annular form to receive a brass liner which fits over the gaine carried by the base fuze. The car-ton is closed at the base by a cardboard washer and has a solid block of the bakelite type at the top which is shaped to fit the small end of the shell cavity.

The weight of the shell filled and fuzed is 1 lb. 13 oz. 13 dr.

A similar shell with the remmants of a cap and filled T.N.T. is described in Pamphlet No. 2.

Fuze
The Skoda base fuze B.Z. 15 is described in Pamphlet No. 2.
Cartridge Case

The brass case is 10.55 inches in length and has a shoulder-formed by an increase in the taper near the mouth. The primer hole is screwthreaded to a diameter of 0.66 inch.

Propellant Charge

The charge is in the form of long thin flexible strips with a smooth surface and has a pa-per label attached which reads "152 g 06/6/210 P.P. Vz. 36S. 5C/37". This indicates the charge weight in grams (5 oz. 5 1/2 dr.), the dimensions of the strip in millimetres (thick-ness 0.024 inch, breadth 0.236 inch length 8.28 inches), the shape (P.P. denotes strip), the nature (Vz 36S) and the lot. The propellant consists of 63.96 per cent of nitrocellu-lose, (Nitrogen content 12.3 per cent), 30.06 per cent of nitroglycerine and 5.98 per cent of centralite.

The decoppering agent, included with the charge, is a 3.9 inch metal strip, 0.24 inch wide and 0.13 inch thick. The strip weighs 26 grains and consists of 60.4 per cent of tin, 37.8 per cent of lead and 1.8 per cent of bismuth. There is also a trace of antimony.

Primer

The percussion primer Vz. 33 sv. is the medium size of the Vz. 33 type and differs from the Vz. 33 dv. described in this Pamphlet, in the length of the magazine which is 1.35 in-ches instead of 1.97 inches. The designation of the primer is stamped in the base.

Fig. 8

German s. 10 cm K. 18 (10.5 calibre) Q.F. CartridgeGerman Primer, Percussion, Q.F. Cartridge, Vz. 33 of Czech Origin